Ceramic bearing have excellence performance as special electrical and magnetism resistance,wear and corrosion resistance,lubrication and maintenance free when working,especially high and low-temperature application.ect.could be used in awful environment and specially condition.the rings and balls made by full ceramic material:ZRO2,as a standard constructure,the cage made by PTFE,generally we also could make the cage with GRPA66-25,PEEK,PI,SUS304,SUS316,Cu,etc.